Are you wondering what’s so different about LED TVs and the standard LCD TVs? They pretty much look the same, flat LCD screens that are used to watch your favorite films, programming and to connect your games consoles to. So what is an LED TV? Is it just a name branding that TV manufacturers using for their new products as a marketing strategy? Here are a few things you need to know about LED TVs.
The name “LED TV” is actually popularized by Samsung, LG, Panasonic, Toshiba, Philips and other LCD TV companies. LED TVs are actually LCD TVs that utilizes LED backlights instead of cold-cathode fluorescent lights (CCFLs). It is based on LCD technology, where an LCD screen is illuminated at the back to increase dynamic contrast and brightness. Therefore the right name should be LED-backlit LCD TV.
LED backlighting saves more power than CCFL backlights, and is more energy efficient than Plasma TVs. LED components have low power requirements but with the correct configuration and design, output and function can be amplified without additional power costs. LED televisions are marketed as green TVs, with Samsung boasting 40% power savings from their LED TV line up.
There are two types of LED-backlit LCD TVs, edge-lit and full-array. Edge-lit means that all LED backlights are located at the sides of the TV. This type of configuration is widely used to produce ultra thin LED televisions. On the other hand, full-array means that an LCD has a LED layer behind it. The two lighting configurations produce a difference in the performance of how uniformly the LCD display is lit.
Super-thin LCDs are often built by using edge-lit LED backlighting, and the brightness uniformity over the center of the screen often suffers. Full-array backlight has advantage over this and is able to provide uniform contrast on all areas of an LCD screen. It also provides TV manufacturers the ability to develop an internal system that intelligently and selectively controls the brightness of areas of the display that needed to be bright or dark. This means, that with the full-array, one can achieve “local dimming” and achieve brighter whites and true blacks. With this, LED TVs with full-array backlit provides clearer pictures and more vivid colors, all uniformly distributed on the screen when compared with the edge-lit display.